Lard-lamp



D- KINNEAR.

Lamp

Patented Feb. 4, 1851.

No.- 7,921- r N, PETERS Phnio-Liihograp wr, Wathinglon. D, C.

UNITED STATES PATENT OFFICE.

DELAMAR KINNEAB, OF CIROLEVILLE, OHIO.

LARD-LAMP.

Specification of Letters Patent No. 7 ,921, dated February 4, 1851.

To all whom it may concern Be it known that I, DELAMAR KINNEAR, ofCircleville, in the county of Pickaway and State of Ohio, have inventeda certain new and useful Improvement in Lamps, which is described asfollows, reference be ing had to the'annexed drawings of the same,making part of this specification.

Figure 1 isa perspective view of the lamp. Fig. 2 is a vertical sectionof ditto. Fig. 3 is an end elevation of the slide coveror stopper. 1

Similar letters in the several figures refer to corresponding parts.

The nature of my invention and improvement consists in forming a chamber71 of the form of a section of a frustrum of a pyramid in its crosssection above the ordinary chamber that contains the liquid forproducing the light so as to make the sides of said chamber perform thetwo ofiices of side chambers for preventing the spilling or waste of theliquid lard, or oil, when the axis of the lamp is made to deviate from aperpendicularline and assume a horizontal.

position, or an approximation thereto, in

handling the lamp carlessly, and as side channels, or dovetail. grooves,forthe slide or cover to move in when a slide cover or stopper issubstituted for a. screw cap stopper.

a is the main reservoir for holding the lard or other article employedto produce" the required light. 6 is a flat wick tube extending downinto the reservoir so as to act as a wick holder and lard heater, beingsecured to the bottom of the upper reservoir.

0 is a round wick tube for a round wick to be used as a night light whenthe fiat wick light is extinguished. l

d is a slide for opening andclosing the e is a metallic heater forkeeping the lard in a liquid state during the night, said heaterreservoir a on either side of the wick tubes 1), c, for preventing thespilling or waste of the oil whenthe stem of the lamp is held in ahorizontal or inclined position; and also the dovetailed slide d, andthe aforesaid angular channels or grooves 2'. l

I claim as myinvention- 1. In combination with a lamp ofthe peculiarformandconstruction represented in the annexed drawings; or other formsubstantially the same, said channels or grooves serving also to receiveand hold the sliding cover cZ used} for closing the supply openinginsteadof the ordinary screw cap; and in combination with the aforesaidangular channels.

2. I also claim the said sliding cover d when made with correspondinglyshaped. I

sides to fitand move in said channels, all as herein described andrepresented.

In testimony whereof I have hereunto signed my name before twosubscribing wit nesses.

DELAMAR KINNEAR. Witnesses: I

T. O. DONN,

D. S. WELLE.

